detail
| model | Must Tank LM Opaline New Old Stock |
| Product number | 590005 |
| Year of manufacture | 1990's |
| machine | Quartz (battery operated Cal.90) |
| Country of manufacture | Switzerland |
| waterproof | non-waterproof |
| case diameter | 30mm×23mm |
| Case material | Verlmail |
| Windshield material | mineral glass |
| belt width | 17mm |
| Buckle width | 16mm |